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題 名 | 接收器時鐘偏差對衛星相對定位及姿態求解之影響=The Impact of Receiver Clock Biases on Relative Satellite Positioning and Attitude Determination |
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作 者 | 林修國; 吳究; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 11:3 1999.09[民88.09] |
頁 次 | 頁551-557 |
分類號 | 440.98 |
關鍵詞 | 接收器時鐘偏差; 姿態求解; Receiver clock biases; Attitude determination; |
語 文 | 中文(Chinese) |
中文摘要 | 利用 GPS 進行坐標求解的過程中,接收器時鐘偏差參數與高程分量的高相關, 會使求解得高程分量精度較平面分量精度差上許多;而這種使求解高程精度變差的情形於二 次差分模式中依然存在。為解決上述的問題,本文針對接收器時鐘偏差量提出一套解相關的 做法,並利用 Ashtech 3DF 的資料驗證了文中所提的理論。文中的實驗例顯示(共 900 筆 資料),利用該做法使高程分量由 0.38cm 改善為 0.07cm,改善程度達 540%。另外,當此 做法應用於姿態角求解時,在ω方面由 1.074 °之標準差改善為 0.105 °,而φ方面亦由 0.416 °改善為 0.075 °,而κ方面則由 0.138 °改變為 0 135 °。 |
英文摘要 | Because of the high correlation between receiver clock biases and the GPS-determined height components, the horizontal accuracy is theoretically better than the vertical accuracy, and this situation still exists even when using a double-difference phase model. In this paper, a decorrelation technique to improve the height accuracy by calibrating the receiver clock bias is proposed, using Ashtech 3DF data for verification. Based on our experiment (in a total of 900 epochs) the height accuracy achie ed is improved from 0.38cm to 0.07cm, by nearly 540%. Besides, when this technique is applied to attitude determination, the standard deviations can be improved from 1.074 ° to 0.105 ° in the ω component, from 0.416 ° to 0.075 ° in the φ component, and from 0.138 ° to 0.135 ° in the κ component. |
本系統中英文摘要資訊取自各篇刊載內容。